The thing we thought we remember isn’t always the case. I read a book as a teenager (fiction) that changed how I perceived the world and the possibilities it held.
Recently, I re-read the book and while it still holds up, there were whole sections (latter parts) that I completely forgot. Or maybe my younger self was too impatient and skipped areas deemed too boring. Bottom line? Check the foundations of your perception occasionally. It might be that it’s faulty either due to incomplete knowledge or false interpretation.